- May 6, 2026The deep transverse perineal muscle forms the muscular base of the urogenital diaphragm in the deep perineal pouch. It is…
- May 6, 2026The superficial transverse perineal muscle forms the posterior boundary of the urogenital triangle, stabilising the perineal body from the ischial…
- May 6, 2026The ischiocavernosus encircles the crus of the penis or clitoris, compressing the deep dorsal vein to maintain erection by preventing…
- May 6, 2026The piriformis is the key muscle of the greater sciatic notch — it divides the notch into the suprapiriform and…
- May 6, 2026The obturator internus makes a 90-degree turn around the lesser sciatic notch (ischium), using it as a pulley. It then…
- May 6, 2026The levator ani is the primary pelvic floor muscle, forming a hammock beneath the pelvic organs. Its three parts (pubococcygeus,…
- May 6, 2026The gluteus medius is the primary hip abductor and single-leg stance stabiliser. Its posterior facet insertion on the greater trochanter…
- May 6, 2026The gluteus minimus is the deepest and smallest of the three gluteal muscles, lying deep to the gluteus medius. It…
- May 6, 2026The quadratus femoris is the most inferior of the short external rotators (the "POGO" muscles — piriformis, obturator internus/externus, gemelli,…
- May 6, 2026The obturator externus passes posterior to the femoral neck to reach the trochanteric fossa, making it a deep posterior hip…